import java.math.BigDecimal;

public class DecimalDemo {
  public static void main(String[] args) {
    BigDecimal operand1 = new BigDecimal("1.0");
    BigDecimal operand2 = new BigDecimal("0.8");
    BigDecimal result = operand1.subtract(operand2);
    System.out.println(result);
  }
}
